Recently, I used the USB_OTG_FS of STM32F407VET6 as a virtual serial port for work.
I used STM32 CubeMX to generate the virtual serial port code of STM32F103C8T6 before, and it was very convenient to use. So I used MX to produce the project for F407 this time, but I encountered many problems and was troubled for two days.
Let me talk about my process first.
The address of the post was that the heap space allocated by STM32CubeMX was too small:
change 0x200 to 0x600 (isn't it generally the case that the heap space is larger than the stack space?), regenerate the project, compile, download, and plug in the USB:
Fantastic! The yellow exclamation mark finally disappeared (ignore the COM7, that was a minor problem with the driver). Compile after adding some code:
/* StartDefaultTask function */
void StartDefaultTask(void const * argument)
{
/* init code for USB_DEVICE */
MX_USB_DEVICE_Init();
/* USER CODE BEGIN 5 */
/* Infinite loop */
for(;;)
{
CDC_Transmit_FS((uint8_t *)"No Fuck!\n",sizeof("No Fuck!\n"));
osDelay(500);
}
/* USER CODE END 5 */
}
Finally it can be used normally, and this USB virtual serial port can come to an end.
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